Smart Machine Smart Decision
SIM800H_Hardware_Design_V1.01
17
2013-08-20
ROW2
61
O
ROW1
60
O
ROW0
62
O
GPIO
GPIO1
3
I/O
GPIO2
27
I/O
GPIO3
28
I/O
Programmable general purpose input
and output
NETLIGHT
64
O
Network status
STATUS
4
O
Power on status
Serial port
UART_DTR
69
I
Data terminal ready
UART_RI
68
O
Ring indicator
UART_DCD
70
O
Data carrier detect
CTS
34
O
Request to send
RTS
33
I
Clear to send
TXD
32
O
Transmit data
RXD
31
I
Receive data
If these pins are unused,
keep open.
Debug interface
VBUS
7
I
USB_DP
59
I/O
USB_DM
19
I/O
Debug and download
If these pins are unused,
keep open.
ADC
ADC
50
I
10bit general analog to digital
converter
If these pins are unused,
keep open.
PWM
PWM
26
O
Pulse-width modulation
If these pins are unused,
keep open.
I
2
C
SDA
75
I/O I
2
C serial bus data
SCL
74
O
I
2
C serial bus clock
Need external pulled up
SIM card interface
VSIM
16
O
Voltage supply for SIM card.
Support 1.8V or 3V SIM card
SIM_DATA
14
I/O SIM data input/output
SIM_CLK
55
O
SIM clock
SIM_RST
15
O
SIM reset
All signals of SIM interface
should be protected
against ESD with a
TVS diode array.
SIMPRE
54
I
SIM card detection
Reservation function
Antenna interface
ANT
40
I/O Connect GSM antenna
BT_ANT
36
I/O Connect Bluetooth antenna
FM_ANT_P
17
I
FM_ANT_N
57
I
Differential antenna for FM
